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Date: 2009-12-05 20:46:56 Lava tubes Shield volcanoes Lava Pit crater Basalt Volcanic field Craters of the Moon National Monument and Preserve Lava Beds National Monument Geology Volcanology Volcanism		Ore Bin / Oregon Geology magazine / journal Add to Reading List Source URL: www.oregongeology.org Download Document from Source Website File Size: 1,89 MB Share Document on Facebook

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